Hemming attachment for sewing-machines.



A. H. DE VOE.

HEMMING ATTACHMENT FOR SEWING MACHINES. APPLICATION FILED SEPT-20, 1911.

1 ,27 1,29 1 Patented July 2, 1918.

ms NoRnls Pzrzns can Pnomuma, wasumcmu. nv c.

UNITED STATES PATENT OFFICE.

ALBERT n; nn von or WESTFIELR; NEW Jnnsny, nssrGnon TQ.riiiasmennrinivorad,

TUZRjI'NG' COMPANY, A CORPORATION on NEW JERSEY.

nnivrmne ATTACHMENT ronsEwmG-Mixcmnns,

Specificationof Letters Patent. I

ratentediJulyfe, 1918.;

Applicationifiled September 20,1917; Serial massages.-

"Westfield-,.inthe countyof Union and State.

ot. New Jersey, have invented certainnew,

and useful Improvements in Hemming A ttachments 'for SewingMachines,. ofwhich the following is a specification, reference -being; had therein tothe accompanying; drawings.

This invention; relates to sewing, machine attachments particularly ofthe i kind known; as hemmers. I

In; hennningi materialwhich is cut ona convexed curve, the; overturnedmargin-t being ofgreater length than the underlying body portion, it.-is liable: to, kink or fold and thereby mar the appearance ofthefinished. product. It; is: an object of this in-. "vention toprovide: against such'a defective appearance of the product bydistributing. the. fullness among. the stitches securing the hemdown. 1Q

The; invention consists essentially of... a separating: arbor-like..-member arranged in. advance-"f theneedle-liole. with its endportionWhiclrissnearest the needle substantially abreast of; the: front Walldefining they usedlei-liole and; with the highest part; of this. same:end portion at: a higher elevation than; the lowest surface oftthe-.presser-.fo0t-.underwhich the. overturned imargin of the; hem isadapted to .passso that ethe turned margin, of the. hem will crosstheneedle-path at an. inclination.

The invention in; its preferred form" is illustrated in the accompanyingdrawings; in which: Figure lis aeside;elevationof;a;' combined.presser-foot': and hemmer. Figs.

2eis anplan iew: ofr-the-ssame. Fig; 3 'is across-section-.on.zthevlineja-+b; Figx 2; Fig;- 4 is a icross-sectionzonthe line 0-;d; Fig. -2 and Fig.1 5=is a detailed-perspective of theseparating. member and its: spring; 1

In the-embodiment of the invention illlis -rl trated. 1 in the. drawing,sthe shank: 1 of the pressenfoot. is; provided at: its 1 lowest: per:tioncwith. attransverse rilo 2 ito.:Whichthen;v correspondinglygroovedafoot portion-3 is adj ustably secured means of: the SCI'GWf.

4 tapped into the foot: port-ion: and passing through :Ythe; elongatedopening: 5% in; the; shank. Aineedle-holea 16 through which *lth eneedle .6: passes5.is-..provided1 in;thee.fo.bt;;por-{ tioniandiitiselongated: transverselyai; 625

in, direction across-the line of, seam ffor-s matlon. a 111 advance ofthe needle-hole thefoot. portion? is provided with afolding mem her 7having asubstantially vertical direct-. ing portion 8 and .a curved and,downwardly. lncllned deflecting surface 9 iextendingfromazpointslightly, in front of the needle-hole to apoint a, greaterdistance in-reargof thence-. dle-hole, In advance of theneedle-hole andon the side thereof-opposite to thefoldingr member 7 the foot portion=isprovided Avith" a supporting arm 10 drilled to receive the shoulderedpivot screw 11 which istappedsinto a. triangular-shaped block; 12constituting a,-separating member. about whichxanover turned margin of;materialmay be" folded and heldspaced from the underlying body portionof the materiall u 1 This separating; member 12 liasla' doWnwalrdly andrearwardlylinclined upper or and aspring 17: isfclamped by screw-.018?

in; v the, channelnwith itsfree: end bearing; yieldingly upward.against-the pin which; is Effector yield downwardly .frolnthe normaloperating position shown in v Fig until-g the: pin 15 contacts with the1 lower. wall of;

theyclearance aperture-n19i -providedxin the;

arm 10 of'the footsportions' I l, r a The; folding member-Z7 may, ifdesired;- be

provided :with: a guard or ledge :20 secured."

in; any suitable manner thereto-,1 as, by the,

' screw 21, for,.preventinglthelmaterialmbeing ing member?7." a IIn'fiusinggjthis device, which Was especially designed for turning a hemon thatpor tion i of a toe-vamp which joins with the upper g operatedupon working out under tl1e-fold-.

the? material sis/inserted over; the guard: orv ledge 20 and turned byhand so that ,iit asf-g sumes :w the condition- 5 illustrated in Fig. 3.

After-f few; T stitches have I been: made; the overturnedinargin'willbefin the condition! illustrated Eini Fig; 'tfso}ithat1,the:needle will= penetrate it at an angle less than 90 andpresser-foot provided with a needle-hole, a-

' gin of a hem may be thereby the length of material between successivestitches will be greater in the overturned portion of the hem than inthe underlying body portion. In this way it will be seen that thesurplus material in hemming a curved edge will be distributed amongsuc-, cessive stitches and prevented from causing a fold in theoverturned margin of the hem. By making the separating member yieldingthis action may be varied to suit different curvatures, the operativemerely holding back on the work gripped between the feeddog andthepresser foot and thus inclining it at such an angle that the separator12 will be depressed sufficiently to suit the particular curvature ofthe edge being stitched.

The screw 4 and slot 5 permit of bodily and laterally adjusting the footportion relative to the needle, whose path is fixed, and thereby ofvaryingthe distance of the stitching from the hem fold. I v I Havingthus set forth the nature of the invention, what I claim herein is .1.In a sewing machine having stitchforming mechanism including a needle, apresser-foot provided wlth a needle-hole, a hemmer having a separatingmember over which a turned margin of material may pass,

said separating member terminating in an end portion immediatelyadjacent and in folding member for turning a margin of material onitself, said folding member having a directing wall merging into adeflecting curved wall immediately adjacent the needle-hole, aseparating member around which the overturned margin of a hemis adaptedto'be bent, j said separating member having a downwardly and rearwardlyinclined top 7 surface terminating in an end portion substantiallyabreast of the front of the needlehole, said separating and foldingmembers being spaced apart to define a channel'in the lower surface of,the presser-foot, and said inclined top surface'of the separating memberbeing spaced above the lowest-sun face of the resser-foot in rearthereof in; the directionof feed whereby the surplus material intheoverturned'margin of a hem ona convexedly curved edge may bedistributed. I

3, In; a combined hemmer and presser foot provided'with a needle-hole, afolding member at one side and in advance of the needle-hole,asubstantially' parallel support ing arm at the opposite side and inadvance of the needle-hole, a separating member yieldingly mounted onsaid armin advance of the needle-hole, said separating member having anend portion located at a higher elevation than the lowest surface of theresser-foot in rear thereof in the direction of feed.

4. In a combinedhemmer and presserfoot provided with a needle-hole, afolding member at one side and in advance of the needle-hole, asubstantially parallel supporting arm at the opposite side and inadvanceof the needle-hole, a separating member pivoted to said arm,means for holding said separating member in operative position with thehighest part of its end portion above the lowest-surface of thepresser-foot under which the turned margin is adapted to pass.

5. In a combined hemmer and presserfoot provided with a needle-hole, afolding member at one side and in advance of the needle-hole, asubstantially parallel support ing arm at the opposite side and inadvance of the needlehole, a separating member pivotedto said arm, aspring for yieldingly holding the free end portion of said separatingmember in normal operative position, a stop for limiting displacement ofthe separating member bysaid-spring, said separating member having anend portion located above the lowest part of the presserfoot in rearthereof in the direction of feed.

6. In a hemmer for sewing machines,'a presser-foot' having ashank and aseparate foot portion providedwith a needle-hole elongated'in adirectiontransverse the line of seam formation, means for adjusting said footportion on the shank in the direction of the length of the needle-hole,a folding member at one side and in advance of the 1 needle-hole, asubstantially parallel supporting arm at the opposite side and'inadvance of the needle-hole, a separating membermovably mounted on saidarm in advance of the needle-hole, said separating member having an endportion located above the lower surface of'the presser-foot under whicha i turned margin of a hem is adapted to pass.

7. In a combined hemmer and presser-foot .115

provided with a needle-hole, a folding member having a substantiallyvertical edge directing wall merging into a curved-and downwardlyinclined deflectingwa-ll crossing the needle-hole, anarm spaced from andparallel to the folding member, a separating member pivoted at the frontend of said arm, a pin carried by saidseparating member between itspivot and the needle-hole, a spring mounted inq'said' presser foot andyieldingly urging-thel 'pin carried by theseparating member upwardly,-an elongated apertureprovided in the arm to-rece'ive said pin, saidseparating memberfhaving its rear end portion located in immediateproximity to the needle-hole and above the lower surface of the presserfoot.

8. In a comb'ned hemmer and presser-foot provided with a needle-hole, afolding member at one side and in advance of the needle hole, asubstantially parallel supporting arm at the opposite side and inadvance of the needle-hole, a separating member yieldingly mounted onsaid arm in advance of the needle-hole, said separating member hava ingan end portion located at a higher elevation than the lower surface ofthe presserfoot in rear thereof in the direction of feed,

and a guard-finger carried by the folding member in advance of theneedle-hole.

9. In a sewing machine having stitchforming mechanism including aneedle, a pressenfoothaving a needle-hole, means associated therewithfor turning ahem, in combination with means for making thedistancebetween stitches in the turned margin of a hem greater than the distancebetween stitches in the underlyingbody-portion of the hem whereby thefullness of a hem on a curved edge of material may be distributed amongthe stitches securing it .in place, without folding the margintransversely.

10. In a sewing machine having stitch forming mechanism including aneedle, a I

Copies of this patent may be obtained for the stitches securingit inplace, without folding the margin transversely. 1 a

, l1. Ina sewing machine having stitchforming mechanism including aneedle, a presser-foot having a needle-hole, means associated therewithfor turning a hem, in

combination with means located within the foot proper for making thedistance between stitches in the turned margin of a hem greater than thedistance between stitches in the underlying body-portion of the hemwhereby the fulhiess'of a hem on a curved edge of material may bedistributed among the stitches securing it in place, with out foldingthe margin transversely.

In testimony whereof, I have signed my name'to thls specification.

vALBERT H. DE VOE.

five cents each, by addressing'the Commissioner of Patents,

Washington, D. G. p v

